Thesis Defense

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Events on Wednesday, December 13th, 2023

Naturalness Demands an Answer: The Imperative of Natural SUSY at the HL-LHC
Time: 11:00 am - 1:00 pm
Place: 5310 CH
Speaker: Kairui Zhang, Physics PhD Graduate Student
Abstract: We explore the ramifications of natural supersymmetry (natSUSY) frameworks for upcoming experiments at the high-luminosity Large Hadron Collider (HL-LHC). Specifically, we scrutinize the production and subsequent decay modes of heavy SUSY Higgs bosons, both neutral and charged, as well as stop pairs and electroweakino pairs, within the context of natural SUSY. The study highlights the importance of decay hierarchy and the potential existence of a light higgsino for accurate interpretation of LHC data. A detailed examination reveals that the dominant decay modes of heavy winos to Standard Model bosons—W, Z, or h—alongside light higgsinos with weak-scale masses, emerge as a unique signature of the natural SUSY paradigm. The investigation delineates both the discovery and exclusion limits for these heavy SUSY particles, thereby offering critical insights into the viability and constraints of natural SUSY models in the forthcoming LHC runs.
Host: Vernon Barger
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